maternal oxygen tension in normal and abnormal pregnancy

The oxygen tension of the maternal arterial blood in 135 pregnant females in the third trimester was studied. 35 cases as normal control group and 100 cases of hypertension with pregnancy. 20 more cases of I.U.F. death were studied as well, of whom four cases of recent [2-7] days and 19 of prolonged [8 days- 8 weeks] duration of death. The maternal arterial P02 in normal pregnant cases was found lower than the accepted mean of non pregnant, again the maternal arterial P02 in hypertensive cases and I.U.F.D, cases were found significantly lower than in normal cases